What is FTP?

What is FTP?

FTP stands for File Transfer Protocol. As the name implies it’s protocol that facilitates the transfer of a file from one client over the network to another client. FTP modes: active versus passive FTP connections can be made using one of these two modes. In...
What is SSH?

What is SSH?

SSH or Secure SHELL is an authentication protocol that support several authentication methods. (Certificate based, username/password) But we have telnet? Remember what I told you about Telnet in this article? Yes indeed, it sends all packets in clear-text over the...
What is telnet?

What is telnet?

Telnet is an application (protocol) that can be used to manage devices remotely. So if you want to log in to a router, switches or any other device that has a telnet client installed, you can use telnet. telnet 10.0.0.1 <any specific port/when not specified 23 is...
What is SNMP?

What is SNMP?

In the world of networking there are a lot of tools and protocols but in the monitoring area SNMP or Simple Network Management Protocol is probably the most widely used. It is old but it is one of those protocols that will stick around forever. What is it used for?...
What is NTP?

What is NTP?

This is probably going to be one of the shortest posts I have ever written, about an invaluable protocol for every network. NTP stands for Network Time Protocol and is a protocol, you guessed it, that is responsible for time synchronization in a network. There are...